btrfs: use scrub_pause_on/off() to reduce code in scrub_enumerate_chunks()

Use new intruduced scrub_pause_on/off() can make this code block
clean and more readable.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Zhaolei 2015-08-05 16:43:29 +08:00 • committed by Chris Mason
commit b708ce969a